课件25张PPT。Unit 3 ComputersLook at the following pictures and say their English names.abacuscalculator
huge computerPC
laptopPDA
robotWhat’s next?keyboardmousemonitorscreenspeaker host computerWhat English words do you know about computers?Can you number the following pictures according to the time? Please discuss what they have in common. laptoprobotPDAPChuge computercalculatorabacusI think that…
In my opinion…
I believe that…
What’s your reason?
Why do you think so?1.They can be used for calculating.
2.They can deal with
maths problems.
3.They are our friends.
4.They are useful and helpful.What do they have in common?What can computers be used to do?Pre-reading:How do you use computers and the Internet?YesNoI often use a computer to…, I sometimes use it to…, and I never use it to…Computers have great power. They make our lives more colorful and more convenient.
BUT
Don’t just use computers for fun.
Don’t spend too much time in playing computer games or chatting(聊天) online. We should learn more computer skills which are very useful in our future work.
Reading:
Who am I?tube 电子管transistor 晶体管chip 芯片Fast-reading:1. Who is the speaker in this story?
A computer.
2. Write down three sentences from the story to support your idea.
1) I was built as an Analytical machine by Charles Babbage.2) My real father, Alan Turing, …
3) I was always lonely standing there by myself, until in early 1960s they gave me a family connected by a network.Listen and answer the questions.1. Where was the speaker born in 1642?
In France.
2. What happened to the speaker after nearly two hundred years?
He was built as an Analytical Machine by Babbage.
3. What was the speaker called in 1936?
A universal machine.
4. What happened to the speaker in the 1970s?
He was used in offices and homes.The computer began as a calculating machine．The computer grew rapidly both in size and in brainpower.Careful-reading:Read the text carefully and fill in the tables.Computers had grown as large as a room.1960sComputers were used in offices and homes.Computers connect people all over the world together.calculatinganalytical universal mathematical
problemsMedical operations MemoryTransistorsApplicationsCommunicationTradeOver time I have been changed quite a lot.Calculating machine
Analytical machine
Universal machine
PC
laptopThese changes only became possible as my memory improvedTubes
Transistors
Chips
Network
World wide webSince the 1970s many new applications have been found for me.Communications
Finance
Trade
Robots
Mobile phones
Medical operations
Space rockets
Providing a life of high qualityIn 1642 I began as a calculating machine and could solve any mathematical problem.
My real father was Charles Babbage, who wrote a book and build me in 1936.
After I got my new transistors in the 1960s, I became smaller but cleverer and quicker.
I was brought into people’s homes in the 1970s.
Since my birth I have been built to
take the place of human race.FFTTFRead the text again and check if it is true or false. DiscussionIs it very important to learn computer skills for us? Why or why not?Use the following expression in your discussion.
I think that ……
In my opinion …
I believe that …
What’s your reason?
Why do you think so?HomeworkRetell the text according to the following clues we given.Changes of the machine.Calculating machineAnalytical machineUniversal machineMachine with artificial intelligenceMachine with new transistorA family connected by a networkA family used by the InternetRetell:
